The extension is the first addition to the Midland Metro since the opening of the initial Wolverhampton St Georges - Birmingham Snow Hill line in 1999 and is part of a £128m 1.4km link from Snow Hill to Stephenson Street outside the recently-rebuilt New Street station, which is due to be completed next year.

Construction has begun on a 1.3km extension from Stephenson Street to Centenary Square, which will open in 2019, and funding has been earmarked to extend the line along Broad Street to Edgbaston by 2021. A 2.5km branch to Digbeth, which would serve the planned High Speed 2 station at Curzon Street, is expected to open by 2023.

At the northern end of the line, a 0.8km northern extension to Wolverhampton Bus Station and Wolverhampton Railway Station, which is scheduled for completion in 2019.